Screw



FIG. 1 is a bottom right perspective view of the screw showing my new design;

FIG. 2 is a right side elevational view of the screw, the left side being a mirror image of the side shown thereof;

FIG. 3 is a top view of the screw;

FIG. 4 is a bottom view of the screw; and,

FIG. 5 is a front side elevational view of the screw, the opposite side being a mirror image of the side shown. 

CLAIM The ornamental design for a screw, as shown and described. 